/*

 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

package jdk.incubator.http;

import java.io.IOException;

import java.nio.channels.SelectableChannel;

import java.util.Objects;

import java.util.function.Consumer;

/**

 * An asynchronous event which is triggered only once from the selector manager

 * thread as soon as event registration are handled.

 */

final class AsyncTriggerEvent extends AsyncEvent{

    private final Runnable trigger;

    private final Consumer<? super IOException> errorHandler;

    AsyncTriggerEvent(Consumer<? super IOException> errorHandler,

                      Runnable trigger) {

        super(0);

        this.trigger = Objects.requireNonNull(trigger);

        this.errorHandler = Objects.requireNonNull(errorHandler);

    }

    /** Returns null */

    @Override

    public SelectableChannel channel() { return null; }

    /** Returns 0 */

    @Override

    public int interestOps() { return 0; }

    @Override

    public void handle() { trigger.run(); }

    @Override

    public void abort(IOException ioe) { errorHandler.accept(ioe); }

    @Override

    public boolean repeating() { return false; }

}